Suzy Zhao

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17 Νοε 2013 (πριν από 4 χρόνια και 7 μήνες)

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Suzy Zhao

Mr. Ortiz

Information Systems 101

October 13, 2005


Biometrics is the technology of authenticating a person’s identity by verifying a personal
characteristic. Biometric devices grant users access to programs, systems, or rooms by
zing some biometric identifier (Schmidt 54
62). A biometric identifier is a physical
or behavioral characteristic. Examples include fingerprints, facial features, hand
geometry, voice patterns, signatures, and eye patterns.

A biometric device translates a
personal characteristic into a digital code that is compared
with a digital code stored in the computer. If the digital code in the computer does not
match the personal characteristic’s code, the computer denies access to the individual.

The most widely us
ed biometric device today is a fingerprint scanner. A fingerprint
scanner captures curves and indentations of a fingerprint. With the cost of fingerprint
scanners less than $100, experts believe this technology will become the home user’s
authentication de
vice for e
commerce transactions. To conduct a credit
card transaction,
the Web site would require users to hold a finger on the scanner. External fingerprint
scanners usually plug into a parallel or USB port. Businesses use fingerprint scanners to
icate users before they can access a personal computer. Grade schools use
fingerprint scanners as an alternative to lunch money. Students’ account balances adjust
for each lunch purchased.

Law enforcement, surveillance systems, airports, day
care centers,
financial institutions,
the military, and other organizations that deal with highly sensitive data use other types
of biometrics. A face recognition system captures a live face image and compares it with
a stored image. A hand geometry system measures the
shape and size of a person’s hand
(Computers and Biometrics). A voice verification system compares a person’s live
speech with his or her stored voice pattern. A signature verification system recognizes the
shape of a handwritten signature, as well as meas
ures the pressure exerted and the motion
used to write the signature. Finally, an iris recognition system reads patterns in the iris of
the eye.

Works Cited

Carter, Donnell W., and Louis C. Juarez. Securing Confidential Data Entered into a
Computer. Bosto
n: Thomas Publishing, 2005.

Computers and Biometrics. Shelly Cashman Series®. Course Technology. 3 Oct. 2005.

Schmidt, Karl J. “Biometrics and Authenticating Computer Users.” Computers and the
Internet Aug. 2005: 54